EP1600964A3 - Kopierschutz von optischen Platten - Google Patents

Kopierschutz von optischen Platten Download PDF

Info

Publication number
EP1600964A3
EP1600964A3 EP05253063A EP05253063A EP1600964A3 EP 1600964 A3 EP1600964 A3 EP 1600964A3 EP 05253063 A EP05253063 A EP 05253063A EP 05253063 A EP05253063 A EP 05253063A EP 1600964 A3 EP1600964 A3 EP 1600964A3
Authority
EP
European Patent Office
Prior art keywords
dsv
data symbols
optical discs
code words
copy protection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05253063A
Other languages
English (en)
French (fr)
Other versions
EP1600964A2 (de
Inventor
Carmen Laura Macrovision Europe Limited Basile
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rovi Europe Ltd
Original Assignee
Macrovision Europe Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Macrovision Europe Ltd filed Critical Macrovision Europe Ltd
Publication of EP1600964A2 publication Critical patent/EP1600964A2/de
Publication of EP1600964A3 publication Critical patent/EP1600964A3/de
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00572—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium
    • G11B20/00579—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium said format change concerning the data encoding, e.g., modulation schemes violating run-length constraints, causing excessive DC content, or involving uncommon codewords or sync patterns
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
    • G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
    • G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof
    • G11B2020/1457—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof wherein DC control is performed by calculating a digital sum value [DSV]
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
    • G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof
    • G11B2020/1465—8 to 16 modulation, e.g. the EFM+ code used on DVDs

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Optical Recording Or Reproduction (AREA)
EP05253063A 2004-05-19 2005-05-18 Kopierschutz von optischen Platten Withdrawn EP1600964A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0411163A GB2414337B (en) 2004-05-19 2004-05-19 The copy protection of optical discs
GB0411163 2004-05-19

Publications (2)

Publication Number Publication Date
EP1600964A2 EP1600964A2 (de) 2005-11-30
EP1600964A3 true EP1600964A3 (de) 2009-11-04

Family

ID=32607579

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05253063A Withdrawn EP1600964A3 (de) 2004-05-19 2005-05-18 Kopierschutz von optischen Platten

Country Status (9)

Country Link
US (1) US7788504B2 (de)
EP (1) EP1600964A3 (de)
JP (1) JP4964429B2 (de)
KR (1) KR100687381B1 (de)
CN (1) CN1700334A (de)
AU (1) AU2005201723B2 (de)
CA (1) CA2505505C (de)
GB (1) GB2414337B (de)
NZ (1) NZ539686A (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0301700D0 (en) * 2003-01-24 2003-02-26 Macrovision Corp The copy protection of optical discs
WO2007145622A1 (en) 2006-06-12 2007-12-21 Thomson Licensing Method and apparatus for embedding second code into optical disc data by data modulation rule variation
US20090067316A1 (en) * 2007-08-30 2009-03-12 Mario Torbarac Method and system for recordable DVDS
KR101781416B1 (ko) * 2010-06-22 2017-09-25 아브 이니티오 테크놀로지 엘엘시 관련 데이터세트의 처리

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020076046A1 (en) * 2000-07-28 2002-06-20 Heylen Richard A.A. Copy protection for optical discs
US20030227398A1 (en) * 2002-06-07 2003-12-11 Media Tek Inc. Method and apparatus for performing DSV protection in an EFM/EFM+ encoding same

Family Cites Families (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8303859A (nl) 1983-11-10 1985-06-03 Philips Nv Selektief scramblen bij compact disc.
JP2974678B2 (ja) * 1988-06-23 1999-11-10 ソニー株式会社 データ誤り検出方式
BR9506787A (pt) * 1994-02-15 1997-09-16 Philips Electronics Nv Processos de converter uma série de palavras de informação de m-bit em um sinal modulado e de produzir um suporte de gravação dispositivos codificador decodificador gravador e de leitura sinal e suporte de gravação
US5659613A (en) 1994-06-29 1997-08-19 Macrovision Corporation Method and apparatus for copy protection for various recording media using a video finger print
US5832088A (en) 1994-08-08 1998-11-03 Sony Corporation Method and apparatus for preventing data copying from a disk using data lengths too large for a pirate medium
CA2165532C (en) 1995-01-23 2005-10-04 Michael L. Mitchell System for encoding a glass master to enable detection of a counterfeit optical cd-rom
JP3457093B2 (ja) * 1995-04-14 2003-10-14 松下電器産業株式会社 記録媒体並びにデジタル変復調方法およびその装置
KR0165441B1 (ko) 1995-09-18 1999-03-20 김광호 디지털 데이터 채널 부호화 및 복호화방법과 그 장치
US5699434A (en) 1995-12-12 1997-12-16 Hewlett-Packard Company Method of inhibiting copying of digital data
US6028936A (en) 1996-01-16 2000-02-22 Disney Enterprises, Inc. Method and apparatus for authenticating recorded media
SE514352C2 (sv) 1996-07-05 2001-02-12 Ifunga Test Equipment Bv Sätt att förse en optisk databärare med identitetsinformation
DE19628005B4 (de) 1996-07-11 2004-04-29 Sonopress Produktionsgesellschaft für Ton- und Informationsträger mbH System und Verfahren zur Bereitstellung von Daten für einen Laser-Beam-Recorder
JPH10106146A (ja) 1996-09-25 1998-04-24 Victor Co Of Japan Ltd ディスクの記録再生方法及び再生装置
US5787068A (en) 1996-11-07 1998-07-28 Imation Corp. Method and arrangement for preventing unauthorized duplication of optical discs using barriers
EP0854482B1 (de) 1997-01-16 2004-03-31 SGS-THOMSON MICROELECTRONICS S.r.l. System und Methode zur Dekodierung des EFM- und EFM-Plus-Aufzeichnungsformats im Leseteil für optische Platten (CD und DVD)
CN1516155A (zh) 1997-05-30 2004-07-28 ���ŷ� 防止记录介质被复制的方法、防复制记录介质以及检测存取控制信息的装置
WO1998057413A1 (en) 1997-06-12 1998-12-17 Auckland Uniservices Limited Wireless signals in inductive power transfer systems
US6016111A (en) * 1997-07-31 2000-01-18 Samsung Electronics Co., Ltd. Digital data coding/decoding method and apparatus
EP0918326B1 (de) * 1997-10-21 2001-09-19 Hewlett-Packard Company, A Delaware Corporation Verfahren zur Verhinderung des Kopierens von digitalen Daten
US6317397B1 (en) * 1997-11-17 2001-11-13 Matsushita Electric Industrial Co., Ltd. Data recording medium, data recording apparatus, data reproducing apparatus and method
KR100403270B1 (ko) 1997-12-29 2004-03-20 삼성전자주식회사 디지털기록매체의저작권을보호하는방법및장치,그리고,그디지털기록매체
US6076165A (en) 1998-01-16 2000-06-13 Sony Corporation Method for authenticating digital recording devices
EP0984346A1 (de) 1998-09-02 2000-03-08 Hitachi Europe Limited Kopierschutzverfahren und -vorrichtung
US6665240B1 (en) 1998-10-07 2003-12-16 Sony Corporation Apparatus and method for manufacturing optical disks, apparatus and method for recording data on optical disks, apparatus and method for reproducing data from optical disks, and optical disk
EP1011103A1 (de) 1998-12-08 2000-06-21 Metatec International B.V. Kopierschutz für CD-ROM
US6966002B1 (en) 1999-04-30 2005-11-15 Trymedia Systems, Inc. Methods and apparatus for secure distribution of software
GB9912312D0 (en) 1999-05-26 1999-07-28 Dilla Limited C The copy protection of digital audio compact discs
GB0003531D0 (en) 2000-02-15 2000-04-05 Dilla Limited C The copy protection of digital audio compact discs
JP2002175662A (ja) 2000-12-06 2002-06-21 Toshiba Emi Ltd 光ディスク
GB0304015D0 (en) * 2003-02-21 2003-03-26 Macrovision Europ Ltd Copy protection for applications
JP3916055B2 (ja) * 2002-03-28 2007-05-16 日本ビクター株式会社 変調方法、変調装置、記録媒体、復調方法および復調装置
JP3971635B2 (ja) 2002-04-08 2007-09-05 株式会社ソニー・ディスクアンドデジタルソリューションズ データ記録媒体、データ記録方法および装置
DE60236405D1 (de) 2002-04-17 2010-07-01 Sony Dadc Austria Ag Kopierschutzsystem für optische Platten
JP3863059B2 (ja) 2002-05-02 2006-12-27 ソニー株式会社 デジタルデータの記録媒体、記録方法、記録装置、再生方法、再生装置、送信方法および送信装置
JP2003323761A (ja) 2002-05-02 2003-11-14 Sony Corp デジタルデータの記録媒体、記録方法、記録装置、再生方法、再生装置、送信方法および送信装置
JP4143330B2 (ja) 2002-05-14 2008-09-03 ソニー株式会社 データ記録媒体、データ記録方法及び装置
JP2003346431A (ja) * 2002-05-29 2003-12-05 Sony Corp データ記録媒体、データ記録方法および装置
JP3671940B2 (ja) * 2002-07-05 2005-07-13 ソニー株式会社 データ記録媒体、データ記録方法および装置
US7212483B2 (en) * 2002-09-25 2007-05-01 Victor Company Of Japan, Limited Modulation device, modulation method and recording medium
GB0301700D0 (en) 2003-01-24 2003-02-26 Macrovision Corp The copy protection of optical discs
JP2004296049A (ja) * 2003-02-10 2004-10-21 Sony Corp データ記録方法および装置、データ記録媒体並びにデータ再生方法および装置
GB0304016D0 (en) 2003-02-21 2003-03-26 Macrovision Europ Ltd The transmission of information
US20050015616A1 (en) * 2003-07-16 2005-01-20 Hogan Josh N. Copy protected mastering system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020076046A1 (en) * 2000-07-28 2002-06-20 Heylen Richard A.A. Copy protection for optical discs
US20030227398A1 (en) * 2002-06-07 2003-12-11 Media Tek Inc. Method and apparatus for performing DSV protection in an EFM/EFM+ encoding same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SCHOUHAMER IMMINK K A: "EFMPLUS: THE CODING FORMAT OF THE MULTIMEDIA COMPACT DISC", IEEE TRANSACTIONS ON CONSUMER ELECTRONICS, IEEE INC. NEW YORK, US, vol. 41, no. 3, 1 August 1995 (1995-08-01), pages 491 - 497, XP000539497, ISSN: 0098-3063 *

Also Published As

Publication number Publication date
CN1700334A (zh) 2005-11-23
GB2414337B (en) 2008-10-29
US7788504B2 (en) 2010-08-31
JP2005332567A (ja) 2005-12-02
GB2414337A (en) 2005-11-23
KR20060047992A (ko) 2006-05-18
EP1600964A2 (de) 2005-11-30
US20050270190A1 (en) 2005-12-08
GB0411163D0 (en) 2004-06-23
AU2005201723A1 (en) 2005-12-08
KR100687381B1 (ko) 2007-02-26
CA2505505C (en) 2010-11-09
JP4964429B2 (ja) 2012-06-27
AU2005201723B2 (en) 2007-08-02
CA2505505A1 (en) 2005-11-19
NZ539686A (en) 2006-10-27

Similar Documents

Publication Publication Date Title
GB2371960A (en) Method and apparatus for encoding with unequal protection in magnetic recording channels having concatenated error correction codes
BG104111A (bg) Метод и устройство за модулация/демодулация с последователно ограничаване на минималната дължина насерия от еднакви знаци в кодова дума
CY1108777T1 (el) Κωδικοποιησις πολυλεκτικης πληροφοριας δια εναλλαγης κατα λεξιν
US20090308924A1 (en) Method and system for encoding data, and method and system for reading encoded data
RU2004115730A (ru) Диск dvd с защитой от копирования и способ его производства и проверки достоверности
RU2013151685A (ru) Устройство обработки данных и способ обработки данных
RU2013146977A (ru) Устройство обработки данных и способ обработки данных
DE602005025407D1 (de) Fehlerschutz für gruppen von datenwörtern
EP1600964A3 (de) Kopierschutz von optischen Platten
WO2007072277A3 (en) A coder and a method of coding for codes with a parity-complementary word assignment having a constraint of d=1, r=2
US9431053B2 (en) Run-length limited (RLL) codes
US7126502B2 (en) Techniques for using interleaved encoders to obtain modulation constraints
EP2015456A3 (de) Computerimplementiertes Verfahren zur Kodierung numerischer Daten und Verfahren zur Kodierung von Datenstrukturen zur Übertragung in einem Telekommunikationssystem auf Grundlage besagten Verfahrens zur Kodierung numerischer Daten
JP2005182965A5 (de)
RU2005126713A (ru) Защита от копирования оптических дисков
US20060109152A1 (en) Error correction for RLL channel bits in demodulation rules
US5574448A (en) Method and apparatus for encoding data with variable block lengths
TW200609917A (en) Decoding apparatus and method of optical information reproducing system
TW200529572A (en) Method and apparatus for rll code encoding & decoding
US20060136729A1 (en) Copy protection for optical discs
US20060170578A1 (en) Techniques for generating modulation codes using running substitutions
EP1034478A1 (de) Kodewort zur verwendung in digital-optischen medien und verfahren zur generierung
CN1734633A (zh) 用来解码盘片读取信号的装置及其方法
TWI524681B (zh) 霍夫曼解碼器及其解碼方法
US7289041B2 (en) Absolute position chain encoder

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20050607

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR LV MK YU

111Z Information provided on other rights and legal means of execution

Free format text: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR

Effective date: 20090226

RIC1 Information provided on ipc code assigned before grant

Ipc: H03M 5/14 20060101ALI20090709BHEP

Ipc: G11B 20/14 20060101ALI20090709BHEP

Ipc: G11B 20/00 20060101AFI20050808BHEP

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR LV MK YU

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ROVI EUROPE LIMITED

17Q First examination report despatched

Effective date: 20120608

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20130423

D11X Information provided on other rights and legal means of execution (deleted)